Jacques Tenebrae, Abyssal name Apelpisia, is the eighth Prince of Hell: The Prince of Despair.
Originally a leader of a cult, he himself became a deitic force once he entered the Separ with the soul of the Demon Shape inside of him. Instead of forcing its way out, the Demon Shape started merging itself with the soul of its captor. This caused him to transform into a more demonic form and the subsequent surge of infernal magic formed what is now known as The OKTE.
Being infused with the power of the Demon Shape, Jacques has access to a great deal of magical techniques burned onto a deck of cards.